Its been many days since I have heard the term 'virtual memory'. On carefully browsing about it I came to know that its size matters in the processing speed but I did not get much of it. I tried seeing my size of virtual memory but unsuccessful. Could anyone please tell me about the virtual memory in the computer, its recommended size on a particular condition and why is it important? I would also like to know its relation with the hard disk.

Couple of days ago my friends were talking about something called primary memory and secondary memory and I had to remain shut since I knew nothing about it. Similarly, today I even heard some tech newbie saying about the same. Actually what is the difference among them. Up to now I have just known that primary memory is volatile and secondary memory is non volatile but I very desperately want to know more about it.

I do not know a lot about processors but I would like to know about cache memory? What is actually that L1 cache, L2 cache and others, does the cache memory have any effect on the processing speed of a computer and why is the size of cache memory so low? I have also noticed that the core i3, i5 and i7 have a larger volume of cache memory. Are the cache memory a part of processors?

Hello everyone! I am using Samsung 10.1 Android Tablet for now. Almost all the memory of this device is full as I have a lot of videos and pictures of a recent holiday. I need to free some memory for use in future. Can someone tell me if it is possible to transfer data from my tablet to an SD card and how it can be done? Thank You!

I have a SD card on which I keep some important back up for work purposes. For security reasons, I want to put a password to prevent access to the information on the card. Can anyone tell me how to do that for an SD card? Is a password secured SD card safe enough to keep data?

Yesterday I got a pen drive from my colleague with work related files on it. I usually do not take work at home but this time was an exception. When I plugged the pen drive in my home laptop, it auto-run and I think that it was infected by a virus. How do I know if my pc is infected and how to stop pen drives from auto-running?

Why is my amazon kindle fire HD 7 rejecting new files? The tablet said there is no more storage space on the tab, but all the files on the kindle fire memory is 6 gigabytes and the tablet storage capacity is 8 gigabytes. How can I assess the remaining 2 gig space that was restricted by the device?

What is file-sharing used for? Can you name some file sharing applications that I can use? Are they free from malware and safe to download into my system? Can I use them on windows or do I need Linux for it? Please let me know if they are also free for use or if I have to pay for them.

Do you know which companies offer free hard disk services? I need several gigabytes and I'm combining several services. At the moment I am using 2GB on Dropbox, Google Drive and am using Ubuntu as well, but I need more Gb, you know.. Thanks in advance.